< Anatomy and Physiology of Animals < Glossary 
      A-B | C-D | E-F | G-H | I-J | K-L | M-N | O-P | Q,R,S | T,U,V,W,X,Y,Z
| Word | Meaning | 
|---|---|
| C | |
| Callus | A thickening of the skin or growth of new bone tissue in and around a fracture | 
| Canines | The long, cone-shaped teeth just behind the incisors | 
| Carbohydrate | An organic compound containing carbon, hydrogen and oxygen. Made up of sugar subunits | 
| Cardiac cycle | A complete heartbeat consisting of systole and diastole | 
| Cardiac muscle | The muscle that makes up the wall of the heart. Striated branched fibres | 
| Cardiovascular system | The body system comprising the heart, blood vessels and blood | 
| Carnassial teeth | The modified premolars and molars in carnivores that slice against each other like scissors for shearing flesh and bone. | 
| Carotid artery | The artery from aorta that supplies the head and brain | 
| Carpal | A bone of the “wrist” | 
| Cartilage | Dense connective tissue found at ends of long bones, in trachea, ear pinna. Also forms the skeleton of the foetus | 
| Cataract | A condition in which the lens becomes cloudy resulting in blurred vision. | 
| Caudal | Nearer to the tail than | 
| Caudal vena cava | The large vein that collects blood from the body caudal to the heart | 
| Cell | The basic structural and functional unit of all organisms | 
| Cell division | The process by which a cell reproduces itself. Two types: mitosis and meiosis | 
| Cell inclusion | A substance produced by cell that is free in cytoplasm i.e. not enclosed by a membrane | 
| Cellular respiration | The chemical pathway that produces energy in the cell It consumes a fuel, generally glucose, in the presence of oxygen | 
| Central nervous system | The part of the nervous system consisting of the brain and spinal cord | 
| Cephalic | To do with the head | 
| Cerebellum | The part of the vertebrate hindbrain located dorsally; functions in unconscious coordination of movement and balance | 
| Cerebral cortex | The surface of the cerebrum; the largest and most complex part of the mammalian brain, containing sensory and motor nerve cell bodies of the cerebrum | 
| Cerebrospinal fluid | The fluid that circulates around and within brain and spinal cord | 
| Cerebrum | The dorsal portion of the brain composed of right and left hemispheres; the integrating center for memory, learning, emotions | 
| Cervical vertebrae | The neck vertebrae | 
| Cervix | The neck of the uterus | 
| Chemoreceptor | A receptor that detects chemicals | 
| Chorionic gonadotrophin | The hormone secreted by the placenta that prevents uterine contractions before labour and prepares the mammary glands for lactation | 
| Choroid | The middle coat of the eyeball | 
| Chromosome | One of the small dark staining bodies in the cell nucleus. Contains the DNA | 
| Chyle | The milky fluid found in the lacteals of the small intestine | 
| Chyme | The semi fluid mixture of partly digested food and digestive secretions in the stomach and small intestine | 
| Cilium (pl. cilia) | A hair like process projecting from a cell. Used to move cell substances along the surface of the cell | 
| Class | The taxonomic grouping of related, similar orders; category above order and below phylum | 
| Clavicle | The collar bone | 
| Clot | The process that changes liquid blood to a gelatinous mass | 
| Coagulation | The process by which blood clots | 
| Coccyx | The tail bones | 
| Coccygeal vertebrae | The vertebrae of the tail | 
| Cochlea | The coiled tube forming the portion of the inner ear that converts sound waves to nerve impulses | 
| Collagen | A protein that is the main organic constituent of connective tissue | 
| Colon | Part of the large intestine. | 
| Colostrum | The first milk, it contains antibodies. | 
| Common bile duct | The duct that carries both bile and pancreatic juice into the small intestine | 
| Compact bone | Dense bone made up of Haversian systems | 
| Conditioned Reflex | The response that is elicited by a stimulus after training has taken place | 
| Condyle | A rounded protuberance at the ends of some bones where it forms an articulation with another bone | 
| Cone | A light sensitive receptor in the retina that responds to colour | 
| Congenital | Present at the time of birth | 
| Conjunctiva | The delicate membrane covering the cornea of the eye | 
| Connective tissue | One of the 4 basic tissue types of the body. Binds and supports. Consists of cells and fibres in a matrixs | 
| Constipation | Decreased defecation due to decreased mobility of the intestines | 
| Continuous breeding | When breeding continues throughout the year | 
| Cornea | The transparent anterior layer of the eye through which the iris can be seen | 
| Coronary artery | The artery that supplies the heart muscle | 
| Corpus luteum | A yellow endocrine gland formed in the empty ovarian follicle after ovulation | 
| Cortex | The outer layer of an organ | 
| Costal | To do with a rib | 
| Cowper’s gland | One of the accessory glands of the male reproductive system | 
| Cranial | Towards the head | 
| Cranial nerve | One of the 12 nerves that leave the brain | 
| Cranium | The brain case that surrounds and protects the brain | 
| Crop | The bag-like structure at the base of the oesophagus in birds.In many birds it stores food before it enters the stomachA | 
| Crop-milk | Secretion produced by glands in the wall of the crop of in pigeons and doves Parents regurgitate it to feed their young | 
| Cross section | Crosswise slice of an animal or organ | 
| Cryptorchidism | Undescended testes | 
| Cutaneous | To do with the skin | 
| Cytology | The study of cells | 
| Cytosol | The semi fluid portion of the cytoplasm | 
| D | |
| Dehydration | Excessive loss of water from the body or its parts | 
| Denaturation | Disruption of the structure of a protein by heat, acids etc. to make it inactive | 
| Dendrite | A nerve cell process that carries the nerve impulses towards the cell body | 
| Dental formula | The formula that describes the numbers of the different kinds of teeth | 
| Dentine | The tissue below the enamel in teeth | 
| Dermis | The layer of dense connective tissue lying under the epidermis | 
| Diabetes insipidus | The condition caused by under secretion of antidiuretic hormone (ADH). Symptom: excretion large amounts dilute urine | 
| Diabetes mellitus | The condition caused by under secretion of insulin. Symptoms: raised blood glucose levels, glucose in urine | 
| Diaphragm | The dome shaped skeletal muscle separating the thoracic from the abdominal cavities | 
| Diaphysis | The shaft of a long bone | 
| Diarrhoea | Frequent defecation of liquid faeces | 
| Diastema | The space in the jaw in animals that have no (or reduced) canines | 
| Diastole | The phase of the heartbeat involving the relaxation of the ventricles | 
| Diastolic blood pressure | Blood pressure in the arteries between the passage of the pulses | 
| Diffusion | A passive process of movement of molecules from a region of high concentration to one of low concentration | 
| Digestion | The mechanical and physical breakdown of food | 
| Digitigrade locomotion | Locomotion on the “fingers” as in cats and dogs | 
| Dilate | To expand or swell | 
| Diploid | Having a double set of chromosomes one maternal, one paternal | 
| Directional terms | Terms that describe the locations of structures in relation to other structures or locations in the body | 
| Disaccharides | Double sugar, consisting of two joined monosaccharides | 
| Distal | Farther away from the trunk of the body or point of origin | 
| Diuretic | A chemical that reduces Antidiuretic hormone production and increases urine volume | 
| Dorsal | Nearer the back of the animal than | 
| Duodenum | First part of the small intestine | 
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